Piano chord · also written G♭dim

F♯ Diminished Piano Chord (F♯dim)

The F♯ Diminished chord on piano is made of the notes F♯, A and C. Tense and unstable. Often used as a passing chord.

F♯ Diminished chord on a piano keyboard: F♯, A, C C5C6 F♯ A C

F♯dim F♯ – A – C

Tap any key to hear it.

Name any chord from its keys in the chord finder →

What notes are in F♯ Diminished?

3 notes, built 1 – ♭3 – ♭5 up from F♯.

Notes
F♯ – A – C
Formula
1 – ♭3 – ♭5
Semitones from the root
0 – 3 – 6
Symbol
F♯dim
Same keys as
G♭dim (G♭ – A – C)
Chord type
Diminished, 3 notes

How to play F♯ Diminished on piano

  • Right hand: F♯ (1), A (3), C (5). Fingers 1 – 3 – 5, thumb on F♯.
  • Left hand: F♯ (5), A (3), C (1). Fingers 5 – 3 – 1, little finger on F♯.

Fingers are numbered 1 (thumb) to 5 (little finger) on both hands.

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F♯ Diminished inversions

Each inversion puts a different note of the chord in the bass. Written as a slash chord: F♯dim/A, F♯dim/C.

F♯ Diminished root position on piano: F♯, A, C F♯ A C
Root position F♯dim F♯ – A – C RH 1 – 3 – 5 · LH 5 – 3 – 1
F♯ Diminished 1st inversion on piano: A, C, F♯ A C F♯
1st inversion F♯dim/A A – C – F♯ RH 1 – 2 – 5 · LH 5 – 3 – 1
F♯ Diminished 2nd inversion on piano: C, F♯, A C F♯ A
2nd inversion F♯dim/C C – F♯ – A RH 1 – 3 – 5 · LH 5 – 2 – 1

Progressions with F♯ Diminished

Press play: the chords move across the keyboard as they sound, voiced so your hand barely moves.

Leading-tone resolution

in G major

  1. IV C
  2. vii° F♯dim
  3. I G
Leading-tone resolution in G major: C, F♯dim, G C E G

Minor ii°–V–i

in E minor

  1. ii° F♯dim
  2. V B
  3. i Em
Minor ii°–V–i in E minor: F♯dim, B, Em C F♯ A

Can you find F♯ Diminished?

Tap the notes on the keyboard, then check. Six chords, starting with this one.

1 / 6 Tap the notes of F♯ Diminished (F♯dim)

Score 0

Any octave, any order. Each key you tap plays.

Practice keyboard: tap the notes of the chord

What key is F♯ Diminished in?

The keys whose scale contains every note of F♯dim, with the chord’s Roman numeral in each.

Major keys

  • G majorvii°

Minor keys

  • E minorii°

F♯ Diminished chord FAQ

What notes are in the F♯ Diminished chord?

F♯ Diminished (F♯dim) has 3 notes: F♯, A and C. Its formula is 1 – ♭3 – ♭5, counted up from F♯.

How do you play F♯ Diminished on the piano?

Put your right thumb on F♯ and play F♯, A and C with fingers 1 – 3 – 5. With the left hand, use fingers 5 – 3 – 1, little finger on F♯.

Is F♯ Diminished the same as G♭ Diminished?

On the piano, yes: G♭dim (G♭, A, C) uses exactly the same keys as F♯dim (F♯, A, C). Which name is used depends on the key of the piece; F♯dim is the more common spelling.

What are the inversions of F♯ Diminished?

1st inversion: A, C, F♯ (F♯dim/A). 2nd inversion: C, F♯, A (F♯dim/C).

What key is F♯ Diminished in?

F♯dim belongs to G major (vii°) and E minor (ii°).

Diminished chords on every root